Mathematics - Permutation & Combination Question with Solution | TestHub

MathematicsPermutation & CombinationArrangement under ConstraintEasy2 minQB

MathematicsEasysingle choice

Madhuri has 10 friends among whom two are married to each other. She wishes to invite 5 of them for a party. If the married couple refuse to attend separately. Then the number of different ways in which she can invite five friends is

Options:

Answer:

Solution:

Total no. of ways $= 10 C_{5}$

Couple separately attend $= 2.8 C_{4}$

∴ required ways $= 10 C_{5} - 2.8 C_{4}$

Stream:JEESubject:MathematicsTopic:Permutation & CombinationSubtopic:Arrangement under Constraint

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...